Piston



w.'w. THlEm-.

. PISTUN.

APPLICATIQN FILED NOV. 29| 192|.

1,436,922. y Patented Nov. 2s, 1922.

2 SHEEsLsHEET l. F o Z' l v v w. w. THIEDE.

PISTON.

APPLICATION FILED NOV. 29, 1921.

1,436,922." I PatentedN0v.28,1922.

Y 2 SHEETS--SHEET 2 pin 17, and is split preferably circumferen tiallyand spirally as shown at 5- in Figure 5 in such a manner that it' willnot exert an outward expansive action on thel inner periphery of thesleeve 4, but will closely `engage the periphery thereof. The ends ofthe wrist pin i7 are mounted in bearings 18 of bearing blocks 19, whichbearing blocks are provided with annular grooves 20 which receive therings 2l secured bymeans of rivets 22 to the marginal edges of openings23 in struck in portions 24. of the sleeve 5. The struck in portions 2eof the sleeve 5 are dia.- metrically disposed, therefore the wristpi-n 7is diametrically disposed in relation to the piston. The upper end ofthe connecting rod may be connected to the wrist pin 1n any suitablemanner. The lower ends of the sleeves 3, 4f and 5 are provided withregisteringapertures 25,- whi'ch apertures allow what is known as thefog in the crank case to spray the cylinder wall and at the same timethe reduce the weight of the sleeves.

Py rom the above it will be seen that a piston is provided, which pistonis formed from a plurality of sleeves detachably carried by a pistonhead, thereby allowing easy assembling of the piston and at the sametime eliminating the use of piston rings, allowing a light constructionof piston, and one which will givethe maximum efficiency. lt will beunderstood that the splits 3, 4g and 5 may be of any conventional form.

The invention having been set forth what is claimed as new and usefulis:

l. A. piston com rising a piston head having an annular c ianneltherein, telescopically en aged sleeves, the upper ends of said sleeveseing provided with inwardly extending engaging anges, said anges beingsaid telescopically engaged Sleeves being split.

2. A. piston comprising a piston head 'ha-ving a channel therein,telescopically engaged sleeves, a-nges carried by said sleeves andengaging each other and disposed within the channel of the piston head,means for sealing the joint between the iianges and the piston head,said sleeves and flanges being split, and a Wrist pincarried by the`inner sleeve.

3. A piston comprising a piston, head, telescopicaliy engaged sleevesdetachably carried by the piston head and forming the skirtof a piston,and means whereby a wrist pin may be supported by the inner sleeve.

4. A piston comprising a. piston head, telescopically engaged sleevescarried by the piston head, the inner sleeve being provided withoppositely disposed struck-in portions having apertures therein, meanscarriedwithin said apertures for supporting the ends of a wrist pin, anda. wrist pin extending diametrically across the inner sleeve and havingits ends disposed within the supporting means in the apertures of thestruck-in portions of the sleeve.

5. A piston compris-ing a piston head, telescopically engaging sleevescarried by said piston head, a wrist pin disposed within the innersleeve, said wrist pin being entirely supported by said inner sleeve.

lnv testimony whereof l hereunto aflix my'v signature.

WALTER W. THEDE.

